PMID- 15681129 OWN - NLM STAT- MEDLINE DCOM- 20050502 LR - 20131121 IS - 0892-0362 (Print) IS - 0892-0362 (Linking) VI - 27 IP - 1 DP - 2005 Jan-Feb TI - Effects of prenatal exposure to chronic mild stress and toluene in rats. PG - 153-67 AB - The aim of the present study was to elucidate whether prenatal chronic stress, in combination with exposure to a developmental neurotoxicant, would increase effects in the offspring compared with the effects of either exposure alone. Development and neurobehavioral effects were investigated in female offspring of pregnant rats (Mol:WIST) exposed to chronic mild stress (CMS) during gestational days (GD) 9-20, or 1500 ppm toluene, 6 h/day during gestational days 7-20, or a combination of the two. Prenatal CMS was associated with decreased thymic weight and increased auditory startle response. The corticosterone response to restraint seemed modified by prenatal exposure to toluene. Lactational body weight was decreased in offsprings subjected to CMS, primarily due to effects in the combined exposure group. Cognitive function was investigated in the Morris water maze, and some indications of improved function due to CMS were observed. In the present experimental setting, there was no indication of the two exposures potentiating each other with respect to adverse effects on the nervous system. However, the effects of prenatal CMS indicate that stress during fetal life may interfere with the development of the thymus and increase the reactivity (startle reflex) of the offspring. FAU - Hougaard, Karin S AU - Hougaard KS AD - National Institute of Occupational Health, DK-2100 Copenhagen O, Denmark. ksh@ami.dk FAU - Andersen, Maibritt B AU - Andersen MB FAU - Hansen, Ase M AU - Hansen AM FAU - Hass, Ulla AU - Hass U FAU - Werge, Thomas AU - Werge T FAU - Lund, Soren P AU - Lund SP LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Neurotoxicol Teratol JT - Neurotoxicology and teratology JID - 8709538 RN - 0 (Dopamine Agonists) RN - 0 (Solvents) RN - 3FPU23BG52 (Toluene) RN - N21FAR7B4S (Apomorphine) RN - W980KJ009P (Corticosterone) SB - IM MH - Animals MH - Apomorphine/pharmacology MH - Behavior, Animal MH - Body Weight/drug effects/physiology MH - Cognition/drug effects/physiology MH - Corticosterone/blood MH - Dopamine Agonists/pharmacology MH - Dose-Response Relationship, Drug MH - Drug Administration Schedule MH - Drug Interactions MH - Exploratory Behavior/drug effects/physiology MH - Female MH - Gestational Age MH - Lactation/drug effects/psychology MH - Male MH - Maze Learning/drug effects/physiology MH - Neural Inhibition/drug effects/physiology MH - Organ Size/drug effects MH - Pregnancy MH - *Prenatal Exposure Delayed Effects MH - Rats MH - Reflex, Acoustic/drug effects/physiology MH - Solvents/*toxicity MH - Stress, Psychological/*complications MH - Toluene/*toxicity EDAT- 2005/02/01 09:00 MHDA- 2005/05/03 09:00 CRDT- 2005/02/01 09:00 PHST- 2003/11/10 00:00 [received] PHST- 2004/08/02 00:00 [revised] PHST- 2004/08/02 00:00 [accepted] PHST- 2005/02/01 09:00 [pubmed] PHST- 2005/05/03 09:00 [medline] PHST- 2005/02/01 09:00 [entrez] AID - S0892-0362(04)00115-1 [pii] AID - 10.1016/j.ntt.2004.08.001 [doi] PST - ppublish SO - Neurotoxicol Teratol. 2005 Jan-Feb;27(1):153-67. doi: 10.1016/j.ntt.2004.08.001.